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Question: Forcing convesion to tanh

Question:Forcing convesion to tanh

Art Kalb 237 Maple
convert exponential
October 20 2010
2

Hi,

 

I am trying to force the conversion of

itail*(exp(vd/Vth)-1)/(1+exp(vd/Vth))

 

to its cleaner looking

 

itail*tanh(vd/(2*Vth))

Anybody know how to do this in a straight-forward way? I've tried convert(,trigh) and convert(,tanh).

The only thing I've been able to do is force the conversion of the numerator and denominator separately by doing the angle bisection (multiplying by the square root of the exponential term) for Maple.

Thanks.
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